1. Comprehensive evaluation of methods to isolate, quantify, and characterize circulating cell-free DNA from small volumes of plasma.
- Author
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Mauger F, Dulary C, Daviaud C, Deleuze JF, and Tost J
- Subjects
- Aged, Aged, 80 and over, Base Sequence, Cell-Free System, DNA, Neoplasm isolation & purification, Female, Humans, Male, Middle Aged, Molecular Sequence Data, Reproducibility of Results, Sensitivity and Specificity, DNA, Neoplasm blood, DNA, Neoplasm genetics, Real-Time Polymerase Chain Reaction methods, Sequence Analysis, DNA methods
- Abstract
Circulating cell-free DNA (ccfDNA) has great potential for non-invasive diagnostics, and prediction and monitoring of treatment response, but its amount is usually limited. Therefore, the choice of methods to extract and characterize ccfDNA is crucial. In the current study, we performed the most comprehensive comparison of methods for ccfDNA extraction (11 methods), quantification (3 methods), and estimation of the integrity index (2 methods) from small quantities of different kinds of plasma. The QIAamp® Circulating Nucleic Acid Kit and the Norgen Plasma/Serum Circulating DNA Purification Mini Kit showed the best accuracy and reproducibility, but the Norgen kit allowed to extract a higher amount of ccfDNA. This workflow provides a reliable protocol for the multiple applications of ccfDNA in biomedicine.
- Published
- 2015
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